The driver used to communicate with the processor requires a custom SIP state if you are using 10.11 or above. Read about SIP
NOTE: You may need to disable SIP again after updating to a newer macOS version.
Whilst holding ⌘+R turn on your Mac
Select Terminal from the Utilities menu
Enter csrutil enable --without kext into the Terminal
NOTE: On macOS 10.14 (Mojave) you will need to enter csrutil disable
Move Volta to Trash
Open Terminal
Enter rm /Library/PrivilegedHelperTools/com.gmathews.volta.helper to remove the kernel extension loader
Undervolting your processor can gain significant power savings
Reducing the operating voltage of the processor can lower thermal output and improve sustained performance
WARNING: Undervolting can reduce system stability - if you experience system stability issues reduce or disable your undervolt
Control whether the processor can operate above its base frequency
Preventing the processor from operating above its base frequency can save power - this can impact performance in heavy tasks
Set a powerlimit for your processor to operate under
The powerlimit will scale the processors frequency during tasks to stay under the set boundry
Decreasing the powerlimit can impact performance but improve battery life and thermals